Pipe-wrench.



No. 684,446. Patented Oct. 15, I90l.

E. E. MINER.

v PIPE WRENCH.

(Application filed Apr. 2, 1901.]

(N0 Modal.)

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UNITED STATES PATENT OFFICE.

ELMER E. MINER, OF MOUNT CARMEL, PENNSYLVANIA.

PIPE-WRENCH.

SPECIFICATION formingpart of Letters Patent No. 684,446, dated October15, 1901.

Application filed April 2,1901. Serial No. 54,071. (No model.)

To all whom it may concern:

Be it known that I, ELMER E. MINER, a citizen of the United States,residing at Mount Carmel, in the county of Northu mberland and State ofPennsylvania, have invented new and useful Improvements inPipe-\Vrenches, of which the following is a specification.

This invention relates to improvements in pipe-wrenches,the objectthereof being to provide a wrench in which the fixed jaw is providedwith opposite engaging faces and cooperates with a reversible swingingjaw, whereby the wrench is adapted for engaging the bodies of pipes ofdifferent diameters and also for gripping the ends of the pipes.

With this end and other objects in view, which will. appear as thenature of the invention is more fully disclosed, the invention consistsof certain novel features of construction andcombination of parts, whichwill be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a view showing the movable jawin longitudinal section and reversed to adapt the wrench for engagingthe flange of a pipe or other object. Fig. 2 is a side elevation of thewrench, showing the movable jaw adjusted so as to adapt the wrench forengaging the body of a pipe or other cylindrical object. Fig. 3 is aplan view looking down upon the inner or working face of the movablejaw.

Referring now more particularly to the drawings, the reference-numeral 1represents the shank or handle-bar of the wrench, which terminates atone end in a fixed jaw 2, having opposing toothed faces 3 and 4, theupper toothed face 3 being concaved and the lower toothed face 4 convexfor a purpose hereinafter described.

5 represents the movable jaw, which is bifurcated at its inner end toform the ears 8, which straddle the shank or handle-bar l and throughwhich and the bar passes a transverse pin 9, which pivotally connectssaid jaw to the bar. v

The jaw 5 is provided upon opposite sides with spaced flanges 10, whichare toothed to provide gripping-faces 11 and form between them alongitudinal space or recess 12, the

base wall of which is toothed to provide a gripping-face 13.

The pin 9 detachably connects the jaw 5 with the handle-bar 1, so thatsaid jaw may be adjusted to cooperate with either of the toothed faces 3and 4 of the fixed jaw 2.

In operation in adapting the wrench for gripping cylindrical pipes orother objects the parts are arranged in the mannershown in Fig. 2, sothat the convex gripping-face 4 of the fixed jaw 2 will cooperate withthe gripping-faces 11 on the side flanges of the movable jaw to grip thepipe or other object between them. The jaw 5 is adjustable toward andfrom thefixed jaw 2 to adapt said jaw to engage pipes of differentdiameters, and the construction is such that three toothed faces of thejaws exert a powerful gripping action to entirely obviate all liabilityof them slipping on the pipe.

To adapt the wrench to engage the smooth or flanged ends of pipes orother objects, the pivot-pin 9 is removed, the jaw 5 reversed andadjusted to the position shown in Fig. 1, and then the pin 9 is replacedto again connect said jaw with the handle-bar. When this is done, thetoothed face 12 of the jaw 5 will cooperate with the concave toothedface 3 of the jaw 2, so as to adapt the wrench for gripping the ends ofthe pipes or other objects, as indicated in said figure, the flangeappearing in solid lines.

When the pipe is gripped between the jaws, the side flanges 11 of thejaw 5 act as guards or steps to prevent the flange from movinglaterally, whereby a firm gripping action of the jaws is insured.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and mode of operation of theinvention will be readily understood and its ad vantages made apparent.Modifications within the scope of the invention may be made withoutdeparting from the spirit or sacrificing any of the advantages thereof.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- A wrench comprising a shankorhandle-bar having a fixed jaw provided with opposing ping-face forgrasping the smooth periphery 1o concave and convex toothedgripping-faces, of a pipe-flange inserted between the side and aswinging jaw removablyand pivotally flanges of the swinging jaw, as setforth. connected with the handle-bar to cooperate In testimony whereof Iaffix my signature 5 with either of said gripping-faces, said swinginpresence of two witnesses.

ing jaw being formed with side flanges hav- ELMER E. MINER. ing toothedgripping-faces for grasping the Vitnesses: body of a pipe and with alongitudinal recess, JOHN MOORE,

the base-wail of which has a toothed grip- V D. W. KEHLER.

